//
//  CAKeyFrameAnimationController.m
//  CoreAnimationDemo
//
//  Created by AY on 17/5/31.
//  Copyright © 2017年 Alex. All rights reserved.
//

#import "CAKeyFrameAnimationController.h"

@interface CAKeyFrameAnimationController ()<CAAnimationDelegate>
@property (nonatomic, strong) UIView *redView;
@end

@implementation CAKeyFrameAnimationController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:self.redView];
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    anim.keyPath = @"position";
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;
    anim.duration = 2.0;

    CGMutablePathRef path = CGPathCreateMutable();
    CGPathAddEllipseInRect(path, NULL, CGRectMake(100, 100, 200, 200));
    anim.path = path;
    CGPathRelease(path);

    // 设置动画的执行节奏
    // kCAMediaTimingFunctionEaseInEaseOut : 一开始比较慢, 中间会加速,  临近结束的时候, 会变慢
    anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    anim.delegate = self;
    [self.redView.layer addAnimation:anim forKey:nil];
//    [self testMove];
}

#pragma mark - 动画的代理方法
#pragma mark 动画开始的时候调用
- (void)animationDidStart:(CAAnimation *)anim {
    NSLog(@"animationDidStart");
}

#pragma mark 动画结束的时候调用
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
    NSLog(@"animationDidStop");
}

- (void)testMove {
    //    CABasicAnimation  fromValue --> toValue

    CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
    anim.keyPath = @"position";
    NSValue *v1 = [NSValue valueWithCGPoint:CGPointZero];
    NSValue *v2 = [NSValue valueWithCGPoint:CGPointMake(100, 0)];
    NSValue *v3 = [NSValue valueWithCGPoint:CGPointMake(100, 200)];
    NSValue *v4 = [NSValue valueWithCGPoint:CGPointMake(0, 200)];
    anim.values = @[v1, v2, v3, v4];

//    anim.keyTimes = @[@(0.5), @(0.25), @(0.25)];

    anim.duration = 2.0;
    anim.removedOnCompletion = NO;
    anim.fillMode = kCAFillModeForwards;

    [self.redView.layer addAnimation:anim forKey:nil];
}

- (UIView *)redView {
    if (!_redView) {
        _redView = [[UIView alloc] init];
        _redView.frame = CGRectMake(0, 0, 100, 100);
        _redView.backgroundColor = [UIColor redColor];
    }
    return _redView;
}
@end
